The mean weight for a group of students is 130 pounds, with an SD of 8...
The mean weight for a group of students is 130 pounds, with an SD of 8 pounds. What is the probability of selecting a single student who weighs 125 pounds or more?
Homework Answers
Mean weight = 130
Standard deviation = 8
Assuming that the data is normally distributed.
The probability that X>125 is equal to the blue area under the curve.
Use the standard normal table to conclude that:
P (z>−0.63) = 0.7357
ANS: The probability of selecting a student who weighs 125 pounds or more = 0.7357
Add Answer to:
The mean weight for a group of students is 130 pounds, with an
SD of 8...
The stem-and-leaf plot on the right gives the weight in pounds of all 14 students in...
The stem-and-leaf plot on the right gives the weight in pounds of all 14 students in a junior high classroom. Use the plot to answer each question. a) List the weight of each student who weighs between 70 and 79 lb ? b)What is the weight of the lightest student in the class? Weights of Students 6 368 7 378 8 9 235568 10 34 6 | 3 represents 63lb
The weight of male students at a certain university is normally distributed with a mean of...
The weight of male students at a certain university is normally distributed with a mean of 175 pounds with a standard deviation of 7.6 pounds. Find the probabilities. 1. A male student weighs at most 186 pounds. 2. A male students weighs at least 160 pounds. 3. A male student weighs between 165 and 180 pounds. Please show work. Ideally excel commands would be helpful, but anything would be great!
From the class survey, the mean birth weight of students is 7.1 pounds with a standard...
From the class survey, the mean birth weight of students is 7.1 pounds with a standard deviation of 1.1 pounds. At what weight is more than 80% of the students? Include a.) the distribution curve, b.) the z-curve, and c.) the solution.
Suppose that the weight students gain in their first year of college is Normally distributed with...
Suppose that the weight students gain in their first year of college is Normally distributed with a mean of 10 pounds and a standard deviation of 2 pounds. (a) What is the probability that a randomly selected student will gain between 6 and 8 pounds? (b) Suppose we pick 5 students at random. What is the probability at least one will gain between 6 and 8 pounds? (c) If 30 students are randomly selected, what is the probability that the...
The weight of local cats in a city is normally distributed with a mean of 11.2...
The weight of local cats in a city is normally distributed with a mean of 11.2 pounds and a standard deviation of 2.5 pounds. a) what is the probability that a randomly selected cat weighs less than 12.3 pounds? b) what is the probability that a randomly selected cat weighs between 10.4 and 13.1 pounds? c) what is the probability that a randomly selected cat weighs more than 17.2 pounds? with steps, please :)
Columbia manufactures bowling balls with a mean weight of 14.5 pounds and a standard deviation of...
Columbia manufactures bowling balls with a mean weight of 14.5 pounds and a standard deviation of 2.7 pounds. A bowling ball is too heavy to use and is discarded if it weighs over 16 pounds. Assume that the weights of bowling balls manufactured by Columbia are normally distributed. (Round probabilities to four decimals) a) What is the probability that a randomly selected bowling ball is discarded due to being too heavy to use? _________ b) The lightest 6% of the...
Columbia manufactures bowling balls with a mean weight of 14.7 pounds and a standard deviation of...
Columbia manufactures bowling balls with a mean weight of 14.7 pounds and a standard deviation of 2.5 pounds. A bowling ball is too heavy to use and is discarded if it weighs over 16 pounds. Assume that the weights of bowling balls manufactured by Columbia are normally distributed. (Round probabilities to four decimals) a) What is the probability that a randomly selected bowling ball is discarded due to being too heavy to use? b) The lightest 5% of the bowling...
10. In a group of 40 students 8 are seniors, and 9 are juniors. of the...
10. In a group of 40 students 8 are seniors, and 9 are juniors. of the 14 students in the group who hold academic scholarships 3 are seniors, and 2 are juniors. A student is selected at random. (a) Find the probability the student is a junior who holds an academic scholarship.
The following data were collected on the height (inches) and weight (pounds) of 5 students. Height...
The following data were collected on the height (inches) and weight (pounds) of 5 students. Height 72 70 62 65 67 Weight 180 172 125 132 145 a. Develop a regression model to predict weight based on height. b. What percent of the total variation in weight has been explained by height? c. If a student is 69 inches tall, what would you estimate the weight to be? Please use the Excel Solver to solve the above exercise question
Suppose that the weight of a Beagle varies Normally with mean 26 pounds and standard deviation...
Suppose that the weight of a Beagle varies Normally with mean 26 pounds and standard deviation 3. What is the probability that a randomly selected Beagle weighs between 20 and 28 pounds? BE CAREFUL: YOU MUST USE THE TABLE TO GET THIS ANSWER CORRECT. Round your z-scores to two decimal places before using the table.
Suppose that the weight students gain in their first year of college is Normally distributed with a mean of 10 pounds and a standard deviation of 2 pounds. (a) What is the probability that a randomly selected student will gain between 6 and 8 pounds? (b) Suppose we pick 5 students at random. What is the probability at least one will gain between 6 and 8 pounds? (c) If 30 students are randomly selected, what is the probability that the...
10. In a group of 40 students 8 are seniors, and 9 are juniors. of the 14 students in the group who hold academic scholarships 3 are seniors, and 2 are juniors. A student is selected at random. (a) Find the probability the student is a junior who holds an academic scholarship.
Most questions answered within 3 hours.
-
Chargaff's results yielded a molar ratio of 0.400 for A to G in
avian tubercle bacillus...
asked 1 minute from now -
Which of the following binds ATP/ADP?
a. microfilaments
b. microtubules
c. intermediate filaments
d. microfilaments and...
asked 1 minute ago -
Assume that the situation can be expressed as a linear cost
function. Find the cost function....
asked 1 hour ago -
(Sort ArrayList) Write the following method that sorts an
ArrayList: public static > void sort(ArrayList list)...
asked 2 hours ago -
2) A 9 volt battery is connected to a parallel plate capacitor
with an initial capacitance...
asked 1 hour ago -
Prince Equipment has to decide whether to obtain $1,000,000 of
financing by: (1) selling common stock...
asked 2 hours ago -
The terms electrical and electronic have similar but
different meanings which of the following statement is...
asked 2 hours ago -
You wish to test the claim that the mean GPA of night students
is than 2.5...
asked 3 hours ago -
A soft drink machine outputs a mean of 25 ounces per cup. The
machine's output is...
asked 4 hours ago -
Ross Co., Westerfield, Inc., and Jordan Company announced a new
agreement to market their respective products...
asked 3 hours ago -
What is the distance run by a runner 50m/hr and
60m/hr?
asked 4 hours ago -
Write a descendant selector rule that affects the <em>
element that is contained within the
<p>...
asked 5 hours ago